Throttle-box.



J. M. COFFEY.

THROTTLE BOX.

APPLICATION FILED FEB. 12.1918

Patented Dec. 31, 1918.

2 SHEETS-SHEET l m: mums r11! m.Pnmurum wnumcmu, a. c.

J. M. COFFEY.

THROTTLE BOX.

APPLICATION FILED FEB. 12, 191a.

1,289,396, Patented Dec. 31,1918.

2 SHEETS-SHEET 2.

JOSEPH M. GOFFEY, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO CHAMBERS VALVE COMPANY, OF NEW YORK, N. Y., A. CORPORATION OF NEW YORK.

THROTTLE-BOX.

- Specification of Letters Patent.

Patented Dec. 31, 1918.

Application filed February 12, 1918. Serial No. 216,885.

To all whom it may concern:

Be it known that I, JOSEPH M. Corner, a citizen of the United States, residing at Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Throttle-Boxes, of which the following is a specification.

This invention relates to improvements in throttle boxes and more particularly to throttle boxes especially adapted for use on locomotive steam boilers.

One of the objects of the present invention is to provide an improved throttle box of simple and practical construction having relatively few parts which may be inexpensively manufactured and assembled. A further object is to provide a box of the above general character with its parts so positioned and arranged that it may be rigidly attached or secured to the dome, thereby to prevent leakage. A further object is to provide a throttle box of the above general character in which the parts are so su ported as to permit an easy and free wor ing of the valve under all conditions.

Other objects will be in part obvious from the annexed drawings and in part indicated in connection therewith by the following analysis of this invention.

This invention accordingly consists in the several steps and the relation of each step to each of the others both individually and in combination; all as more completely outlined herein.

To enable others skilled in the art so fully to comprehend the underlying features thereof that they may embody the same by the numerous modifications in structure and relation contemplated by this invention, drawings depicting preferred forms have been annexed as a part of this disclosure, and in such drawings, like characters of reference denote corresponding parts throughout all the views, of which:-

Figure 1 is a plan view of the throttle box and associated parts with the dome in section;

Fig. 2 is an elevational View partly in sec-' means of studs 23. The sleeve 20 projects tion of the mechanism shown in Fig. 1,

Fig. 3 is a detail plan view showing a modification applicable to the structure dis closed in Fig. 1.

Referrin now to the drawings in detail, 5 denotes t e upper part of the boiler shell to which is secured a steam dome 6, both of well known construction. Leading from the steam dome to the cylinders is a dry pipe 7 connected at one end with an elbow 8 sup' porting a stand pipe 9 for the throttle box. The upper part 10 is secured thereto as by means of a U-bolt 11 and is also provided with a laterally projecting lug 13 adapted to rest upon the upper side of a ledge 14 and be secured thereto by means of bolts passing through registering openings 15. From Fig. 1, it will be seen that the elbow 8 supsame more closely adjacent the wall of the steam dome 6. This throttle box is provided with any desired type of throttle valve 16 and balancing piston 17, as herein shown, although it is of course to be understood that other types of valves may be used with the mechanism hereinafter described, if so desired. This throttle valve is adapted to be actuated by means of a laterally extending shaft 17 passing through the side of the steam dome 6 and provided at its end with a crank arm 18, the end of which is adapted to be connected by means of a pull rod, or the like, extending rearwardly to the throttle lever in the cab in the usual way.

The present invention resides more particularly in the provision of means surrounding this shaft and connected with the steam dome designed to act both as a probeyond this plate 21, thereby providing an drainage means28 and 30,substantiallyflas that,-from the standpoint of the prior art,

extension 24 projecting beyond the outer surface of the dome 6 which acts as a stuffing box.

It is preferred to use a gland 25 on the outside, which is held in place by studs 26 to prevent leakage of steam from the dome to the atmosphere. This simple and practical combination of' parts eliminates all steam leakage and may be easily and quickly installed. It also has the desirable feature in that it tends toward keeping the pa'rts'in line, "thus producing a veryveasy working valve." It is, of course,-.-tobe understood that the interior of these parts are provided with apacking ring;.27, lubricating and shown, l

-In Fig.3, there is shown a slight modification in which a member 3l corresponding to theflange 21- is curved transversely to conform more closely to the inner surface of the steam dome and is provided With a peripheral lip 32 adapted to ,be electrically, welded to the inner surface of the dome 6 rather thanto be bolted, thereto, as I shown iii-Figs. '1 and 2.; The construction is otherwisesubstantially the same; i

- vTh first construction,- however, believed to be preferable for certain reasons inasmuch as the joints can be more easily' broken and,

the throttle removed [when itis desired to substitute orreplace worn or broken parts.

#It is believed from the above description closed will be clear to those skilled in the art, and; a further statement thereof is 1111? necessary -T-he"invention' i s of simple and'practical construction having. relatively few parts; and isbelievedto accomplish, among others,vv all of the objects and advantages herein; set

orth. i

Wither further y s, he erase will so fully reveal the gist of this ,inven-itionthat others can by applying current knowledge readily adapt it for various applications without omitting certain features fairly constitute essential characteristics of the generic or specific aspects of thisinvention, and thereforesuchadaptations should and are intended to; be comprehended within the meaning-and range of equivalency of the following claims.

1 claimr a In a device of the character described,

in combination, a steam dome, a throttlerbox' therein supported from said dome, :Said

throttle .box having a I valve and actuating a shaft, and an integrally formed sleeve and stuffing boxfor said shaft extending; bee- 1 tween the dome and the box.

a-device of the character adapted to have a rigid connection directly withthe inner wall of a steam dome. u v

4; Ina device of the character-described, in combinatioma throttle box having a valve and actuating shaft, a combined sleeve and stufiing box surroundingcsai'd shaftvandintegrallyconnected'with saidzbox. a; a i

.5. In a idevice ofthe" character described, in combinationyadome, a throttle box con taininga valve and adapted to be connected with'a'dry pipe, an actuating shaftvextend ing from said box outsthrough the side of the dome, and ..a combined coveringiand stufling box for said shaftintegrally formed" with said throttleboxue 1.

6. In a device of the character described, in combination, a steam dome, a throttle box positioned "within said dome and provided with a valve,ran-operating shaft extending;

from said box outthrough thetside of the;

dome, an integrally formed: sleeve andstuif-i ing box for said shaft, and coacting: means on the dome and box whereby V the. ibox zis r supported from saididome; r f "5 2 8. In a device of the character described,

in combination, a steam dome, a throttle box:

'withinsaid .dome adapted 110 be connectedwith the. dry pipe, a'valve in'said box,-an

'ing -box 'for'saidshaft, and means for'ses" actuating shaft for said valve extending out throughlthe wall of said dome and-adapted to i be 1 connected with :the throttle lever,v i an integrallyformed sleeve vand stufling box: for said shaft interposed between said dome and box, and means, for, rigidly securingthe stuffing box portion. of said/sleeve .to the in nerwall of said dome; .1

9.. Ina device-of the characterv described, in combination, a steam-dome,'a throttle boxa.

within said domeadapted.;to beconne'ctedh withthe dry pipe, a valve in said box 'an actuating shaft for said valve extendingroutithrough the wall of said dome and adapted to .beconnected with the throttle 1 lever; an integrally formed sleeve and stuffing box-fori said shaft interposed between said dome and In testimony whereof I aflix my signature gox. means for rigidlly securing the Stllfiingl in presence of two witnesses.

ox portion of said s eeve to t e inner wal of said dome, said means includin a flange, JOSEPH COFFEY' 5 a gasket interposed between the ange and Witnesses:

inner surface of the dome and means for FRED A. KUNEMUND, securing said parts in fixed position. E. GOODMAN.

fiopies of this patent may be obtained for five cents'each, by addressing the "eommissloner of Eaten, Washinon, D. 63. 

